Which one has feebly developed root system and numerous air cavities?

Related Mcqs:

1. The enemies of the forest are thus numerous and various and its proper protection depends on:

   A. Knowledge of the various forms of remedying such damage
   B. Knowledge of suitable methods of preventing or remedying such damage
   C. The application of such knowledge to particular cases of damage, with due regard to the cost of the proposed protective operations
   D. All of the above

2. Root cap is absent in:

   A. Lithophytes
   B. Xerophytes
   C. Hydrophytes
   D. Mesophyte

3. Xerophytes have longer root system:

   A. To grant mechanical support
   B. Due to light factor
   C. To draw water from deeper zones
   D. None of the above

4. Deserts plants have longer root system because:

   A. High temperature of soil encourages root growth
   B. Low temperature at night encourages root growth
   C. Those plants adapted to produce long system can survive better in desert
   D. Roots grow in search of water

5. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

6. The trees which produce root suckers are:

   A. Those which produce more and vigorous root suckers
   B. those which produce root suckers less in number
   C. Both (a) & (b)
   D. None of these

7. Method of development of root suckers in Shisham is:

   A. In case of bela forest, after feeling the shisham, trenches are made
   B. In other countries root suckers are produced differently i.e. They expose the roots of the stump and mark very small injuries on the roots on equal distance
   C. Both (a) & (b)
   D. None of these

8. Production of root suckers is:

   A. Without any injury e.g. Populus alba and Populus eupharatica
   B. When they are felled e.g. Prosopis cineraria
   C. Both (a) & (b)
   D. None of these

9. A bacterium found in the root nodules of leguminous plants is the:

   A. Clostridium
   B. Azotobacter
   C. Nitrobacter
   D. Rhizobium

10. The ‘Root system’ is:

    A. Form of roots
    B. Root growth
    C. Special roots
    D. All of the above